12551537 Cast Iron Torsional Damper 6.75"
This cast iron torsional damper (harmonic balancer) is used on most 1969 and later production 305 and 350ci small-block V8s. It is recommended for V6/90? racing engines and V8 applications with limited clearance. 6.75" diameter balancers have also been used successfully on drag racing small-blocks in classes which permit the use of cast iron dampers. The timing mark is 10? before keyway center line.

Technical Notes:
Old number #6272221